Die for forming a helical lock on a glass vial neck



FIG. 1 is a top side perspective view of a die for forming a glass vialhelical lock, showing our new design;

FIG. 2 is a top plan view of the die shown in FIG. 1;

FIG. 3 is a bottom plan view of the die shown in FIG. 1;

FIG. 4 is a front elevational view of the die shown in FIG. 1;

FIG. 5 is a rear elevational view of the die shown in FIG. 4;

FIG. 6 is a right side elevational view of the die shown in FIG. 1; and,

FIG. 7 is a left side elevational view of the die shown in FIG. 1.

The ornamental design for a die for forming a helical lock on a glassvial neck, as shown and described.